Add Dockerfile

Dockerfile

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+FROM python:3.9-slim
+
+# Install system dependencies for WeasyPrint
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    libcairo2 \
+    libpango-1.0-0 \
+    libpangocairo-1.0-0 \
+    libgdk-pixbuf2.0-0 \
+    shared-mime-info \
+    && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /app
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY . .
+
+EXPOSE 8000
+
+CMD ["streamlit", "run", "main.py", "--server.port=8000"]